Scout duel: the other guy uses baby faceblaster and pocket pistol, thanks to the pistol the guy got 140 hp, builds up boost with it at mid-long range, uses the increased speed to either retreat and heal or go and finish you off when you are retreating. GG

Sniper duel: the other guy got Machina+Darwin Shield+ Vaccinator medic and above this got 250ms ping having lag compensation on his side. GG

Skill includes being able to choose coherent loadouts and use them intelligently.

pocket pistol weakness: fire, scout doesn't have a source of fire damage, machina weakness: null no-scope, which is pointless because the sniper duel is at distance, Darwin shield weakness: explosive damage, sniper doesn't deal explosive damage, this is more about trying to get unfair advantage than measure skills